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MEA1D1215DC Datasheet(PDF) 4 Page - Murata Manufacturing Co., Ltd. |
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MEA1D1215DC Datasheet(HTML) 4 Page - Murata Manufacturing Co., Ltd. |
4 / 8 page MEA1 Series 1kVDC Isolated 1W Dual Output DC/DC Converters KDC_MEA1.C05 Page 4 of 8 www.murata-ps.com/support APPLICATION NOTES Minimum load The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%. Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF. Ripple & Noise Characterisation Method Ripple and noise measurements are performed with the following test configuration. C1 1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter C2 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less than 100mΩ at 100 kHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon film, ±1% tolerance R2 50Ω BNC termination T1 3T of the coax cable through a ferrite toroid RLOAD Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires Measured values are multiplied by 10 to obtain the specified values. Differential Mode Noise Test Schematic OSCILLOSCOPE Y INPUT SUPPLY C1 C2 C3 R1 T1 R2 Input Output DC/DC Converter R LOAD + + - - Typical Start-Up Wave Form Start-up time Start-up time μs μs MEA1D0505xC 939 MEA1D1512xC 5630 MEA1D0509xC 2872 MEA1D1515xC 8585 MEA1D0512xC 5325 MEA1D2405xC 472 MEA1D0515xC 8895 MEA1D2409xC 1473 MEA1D1205xC 1150 MEA1D2412xC 2643 MEA1D1209xC 3716 MEA1D2415xC 4348 MEA1D1212xC 6912 MEA1D4805xC 586 MEA1D1215xC 10810 MEA1D4809xC 1705 MEA1D1505xC 883 MEA1D4812xC 2995 MEA1D1509xC 3160 MEA1D4815xC 4722 |
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